Piperazine, hexahydrate → HCID 21517974, compound

Participants

Reaction Steps

A solution of 2.6 gm (0.01 mol) of 2-chloro-6-methyl-4-morpholino-5-nitro-pyrimidine (m.p. 127°-129°C, prepared from 2,4-dichloro-6-methyl-5-nitro-pyrimidine and morpholine) in 100 ml of acetone/dioxane (1:1) was added dropwise, while stirring and cooling, to a solution of 19.4 gm (0.1 mol) of piperazine hexahydrate in 300 ml of acetone/dioxane (1:1) at about 5°C. After about 1 hour the solvents were distilled off in vacuo, and the residue was taken up in about 100 ml of water. The insoluble reaction product was suction-filtered off, washed with water and dried. Yield: 3.0 gm (97% of theory). After one reprecipitation from about 0.2 N hydrochloric acid with 2 N ammonia, the reaction product of the formula ##SPC5##

Provenance & Evidence